Ambrosi, Ivo, Henrique Pereira dos Santos, Renato Sereno Fontaneli, and Sandra Maria Zoldan. 2001. “Profitability and Risk of Production Systems of Grains Combined With Winter Pastures”. Pesquisa Agropecuaria Brasileira 36 (10):1213-19. https://doi.org/10.1590/S1678-3921.pab2001.v36.6248.